Warning, this is not a detachable yoyo, but freestyle (axis is bearing mounted for the yoyo can rotate a maximum of time the figures). It takes a little practice and some internet research to successfully bring them up. But once past the first difficulties, you can get started in the execution of every form.
If you want to see what he can do with this yoyo, you can go to the chain "Toine's Freestyle" on Youtube. You will also find tips for beginners and perfect yourself.